Sync public subset from Flux (private)

include/numerics/inverse/inverse_lu.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "./decomp/lu.h"
+
+
+namespace numerics{
+	
+	template <typename T>
+   	void inplace_inverse_lu(utils::Matrix<T>& A){
+   		if (A.rows() != A.cols()){
+   			throw std::runtime_error("numerics inverse_lu: non-square matrix");
+   		}
+
+   		decomp::LUdcmp<T> lu(A);
+   		lu.inplace_inverse(A);
+   	}
+
+}